this is "nightline." >> tonight -- students under fire. >> i shouldn't be going through this at my school. i feel scared to even go back. >> nine students and one teacher killed in a deadly texas school shooting. >> as soon as i heard the shots i called my mom. i told her, mom, there are gunshots. i heard four shots. that was real. >> witnesses coming face-to-face with the gunman. >> he shot one of my other friends in the head and her body fell down not too far away from where i was under the table. >> now a 17-year-old suspect taken alive. what he told police. clues on his social media page. and fears of explosive devices found at the scene and at his home. >> "nightline" will be right back. back.

good evening. thank you for joining us. tonight, another mass shooting at an american school leaving more parents and loved ones at a loss. this time in texas. a 17-year-old allegedly concealing a shotgun and a revolver under a trench coat. opening fire seemingly at random. abc's marcus moore is in santa fe with students who lived through it.

>> reporter: as schools across america near the end of the academic year -- >> shots fired. >> more shots fired. additional shots fired. >> reporter: it has happened again. the recognizable dispatch audio. >> they're having a shooting at the high school, i have an officer down, shooter not in custody. >> reporter: the familiar images of loved ones clinging to one another. >> i've always kind of felt like eventually it was going to happen here too. >> reporter: this time in the small town of santa fe, texas, located just 30 miles southeast of houston. >> i didn't know what to think. i shouldn't be going through this at my school. this is my daily life. i shouldn't have to feel like that. i feel scared to even go back. >> it was nothing i would ever want another person to have to see. it was horrible. >> reporter: ten people are dead, nine students and a teacher's aide. at least ten others wounded after a gunman opened fire in santa fe high school. >> the reason i see that this keeps happening and we can expect it to keep happening is

because our schools are not protected in the way that it should be. >> reporter: this is the 22nd school shooting this year where someone was killed or injured. the suspect, 17-year-old dimitrios pagourtzis, in jail charged with capital murder. another person of interest has also been detained. the students at santa fe high school had just started the school day when a fire alarm rang out. >> when i first heard the shots i thought it was just like fire. because like the fire drill went off. i thought it was fire pop organize something. >> i thought it was popping of something, explosion or something. whatever. then i heard the next four shots. that's not explosion, that's gunshots. >> reporter: police say the suspect enters the school's art room and opens fire. >> he's actually shooting, he's in the art room. we've got shots fired right now, guys. >> reporter: freshman peter describes the callus actions of the shooter as he hid underneath a table. >> i looked up tweg the legs of a chair and he locked eyes with me. i did make eye contact with him. and he had a -- a face of rage.

he was mad. why, i don't know. but he first opened fire with a shotgun in which he shot one of my other friends in the head and her body fell down not too far away from where i was under the table. that is when he turned like this and opened fire with the revolver. >> he had two guns? >> he had two guns, yes, sir. a sawed-off shotgun then a revolver. and students were running around screaming. one kid flipped a table up for cover. >> everybody just started running outside. next thing you know, everybody looks. and you hear, boom, boom, boom. and i just ran as fast as i could to the nearest place to hide. i called my mom. >> reporter: a call many of those would make in those immediate moments of terror. >> as soon as i heard the shots i called my mom. i told her, mom, there are gunshots. i heard four shots. and -- and was kind of -- it was real. it was real this time. it wasn't real last time. >> reporter: paige's mom describing how she kept her daughter on the line, trying to

keep her calm. >> mom, there are shots. i immediately turned around, i'm coming. i stayed on the phone with her the whole time and just kept talking to her, kept telling her to stay calm, stay quiet till the police finally let her out. >> reporter: police and paramedics responding to the scene within minutes. >> officer down. >> reporter: with the suspect still on the loose. >> we need coverage on the outside, we believe he's barricaded inside. >> everybody needs to clear out this way. >> reporter: teachers ushering students away from the scene as students line up outside. police began their search, having them empty their backpacks on the ground. by 9:00 a.m., the suspect had convenient right si surrendered. >> there have been explosive devices found in the high school. there are two weapons. one was a shotgun. and the other is a .38 revolver. neither of these weapons were owned or legally possessed by the shooter. it's my information that both of these weapons were obtained by the shooter from his father.

>> you limited the amount of casualties just based on the type of weapons this young man used. but you still had ten deaths. it's shocking that we can't create an environment in our schools that are safe. >> reporter: authorities say even more explosives were discovered at the suspect's home. >> one was a co2 device. another was a molotov cocktail. and there's various other types of explosive devices that have been identified, both in a home, as well as in a vehicle. >> reporter: the suspect was a junior at santa fe high school who had even been on the honor roll. and authorities say no prior criminal record. >> his slate is pretty clean. and so there simply were not the same type of warning signs. >> reporter: but just last month he posted this photo of a t-shirt with a slogan "born to kill." >> i'm sure there were a ton of warning signs that were missed. kids this age, they talk online, they talk to other schoolmates.

my guess is that information that he was going to commit an act like this is out there. >> reporter: today the governor saying authorities confiscated the suspect's cell phone and computer containing journals. >> he's going to talk about doing this, he's going to talk about planning it. he's probably also going to talk why he's so mad. and why he feels justified in his own mind. >> reporter: pagourtzis charged with capital murder, being held without bail. >> are you a citizen of the united states? >> yes, sir. >> reporter: because he is a minor, he will not face the death penalty. texas governor greg abbott, who during his three years in office has addressed the nation after three mass shootings, today promising that this time will be the last. >> it's time in texas that we take action to step up and make sure this tragedy is never repeated ever again in the history of the state of texas. so beginning immediately, i'm going to be working with members of the texas legislature, but

also members of our communities across the entire state of texas to begin to work immediately on swift solutions to prevent tragedies like this from ever happening again. >> this has been going on too long in our country. too many years, too many decades now. we grieve for the terrible loss of life. >> reporter: this morning the president responding swiftly. >> everyone must work together at every level of government to keep our children safe. may god heal the injured and may god comfort the wounded. and may god be with the victims. and with the victims' families. very sad day. very, very sad. >> reporter: five months into 2018, nearly twice as many people have been killed in year than have been killed serving in the military. last month some of the students at santa fe high school participating in the national school walkout to end gun

violence. marking 17 minutes of silence for those killed in the scoot high schooli shooting in parkland, florida. the two schools over 1,000 miles apart share a bond. one parkland student tweeting, i should be celebrating my last day of high school but instead my heart is broken to hear the tragedy of santa fe. we cannot let this continue to be the norm, we cannot. parkland senior turned activist emma gonzales saying, santa fe high, you didn't deserve this. you deserve peace all of your lives. after supporting us we will be there to support you by raising up your voices. just over three months ago a gunman armed with an ar-15 rifle opened fire inside the freshman building at marjory stoneman douglas high school, killing 17. the students determined not to let this happen again, started a movement. >> what i wish people would know is this is something that people cannot get used to. this is something that we can't let keep happening. >> reporter: never again was their rallying cry. >> 96 people die every day from

guns in our country. >> reporter: students like david along with hundreds of thousands descended on washington on march 24th. >> it seemed like the crowd of people never ended. i tried with a selfie stick to try and see if i could see where it ended and i still couldn't. >> reporter: no more. yet tonight in santa fe, texas, reality is setting in. >> please rise and remove your caps. >> reporter: houston astros holding a moment of silence. and flying a texas flag at half staff tonight at minute maid park. ♪ >> reporter: community members coming together for a vigil, remembering the ten lives lost. among them an art room teacher's aide, and an exchange student from pakistan. with the senior class set to graduate in two weeks, a time marked by celebrations now tainted by a heinous crime as they remember the lives of those taken too soon. for "nightline," i'm marcus moore in santa fe, texas. >> we'll be right back.

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the british royal wedding is now just hours away. we've been talking all week about meghan markle's magical rise to royalty. but this is not just her fairy tale. prince harry says he's been searching for a woman like meghan his entire life. and tonight we examine his long and at times bumpy road to happily ever after. here's abc's james longman. >> and there they are. the princes we've all been waiting for. look at the excitement.

>> reporter: all smiles. prince harry along with his brother, william, greeting throngs of well wishers outside windsor castle. looking at ease before his big day. many in the crowd have been camped out for days, hoping for this very moment. the 33-year-old prince taking extra time with his youngest fans. and even accepting a teddy bear. before heading back inside the castle. >> do you think harry might an bit nervous the night before his wedding on the world stage? actually he seemed incredibly relaxed tonight. >> how are you feeling tonight? >> reporter: bride to be meghan markle and her mother were seen today returning from tea with the queen. they'll spend the night at the cliveden house hotel along with some of meghan's closest friends. >> how are you feeling, miss markle? >> wonderful, thank you. >> obviously it's quite daunting flying to london, then meeting the queen a couple of days later. but obviously the queen really wanted to meet doria, she wanted

meghan's family to feel welcome here. >> reporter: meghan's mother on a royal meet and greet since her arrival wednesday, meeting with prince charles, his wife camilla, and william and kate. doria ragland is the only member of meghan's family who will be in st. george's chapel for the ceremony. meghan's father is no longer attending the wedding, reportedly recovering from heart surgery and possibly embarrassment after allegedly staging paparazzi photos. the palace announcing prince charles, meghan's future father-in-law, will walk her down the aisle instead. >> i guess he never really had a daughter he'd be able to walk down the aisle. i think it's nice he's going to get to do that for meghan. >> i was told as soon as meghan realized her father wasn't going to be coming to the wedding, her thought immediately turned to prince charles. i think a lot of people might find that surprising. her mother doria was the front runner to step in and do it. but clearly meghan feels that the royal family is a family that she already feels very comfortable with. she clearly wanted charles to do

it. >> i'm sure it will be a very special day for everybody. >> reporter: the prince and his princess to be departed their final rehearsal this morning. the next time they'll likely see each other will be at the chapel. the very same one where harry was christened 33 years ago, seen here in the arms of his mother, at just 3 months old. prince harry has grown up on the world stage. through life's joys and the sorrows. who could forget the heartbreaking image of the 12-year-old prince walking with his beloved mother's casket. >> losing your mother at such a young age does end up shaping your life, massively, of course it does. >> for generations royalty has held themselves in privacy. here harry has talked openly about the loss of his mother. >> reporter: prince harry revealed his feelings in a recent bbc documentary entitled "diana: seven days." >> i think one of the hardest things to come to terms with is the fact that the people that chased her into the tunnel were the same people that were taking

photographs of her while she was still dying on the back seat of the car. >> anybody who's experienced the loss of a parent at that sort of age would understand that the intensity of grief and loss has a desensitizing effect. that may explain why he was able to lead a kind of party-going lifestyle for many years. and it got him into trouble sometimes. >> reporter: some of those antics landed harry in the unflattering glare of britain's tabloids. but princess diana left an indelible imprint on her boys, as she hoped when she spoke to bbc 1 "panorama" in 1995. >> i want them to have an understanding of people's emotions, people's insecurities, people's distress, and people's hopes and dreams. and they have a knowledge. they may never use it but that the seed is there. and i hope it will grow. because knowledge is power. >> reporter: as prince harry got

older he channeled the grief from losing his mother into action. following royal tradition, harry joined the army. he became a combat helicopter pilot, serving two tours in afghanistan. >> life in the army for him was very formative and gave him a sense of structure when he needed it, discipline when he knew he needed it. >> reporter: it was an experience that changed him. here he is in 2016 with abc's robin roberts. >> ten years in the army was the best escape that i've ever had. i felt as though i was really achieving something. i felt as though i was part of a team. all i wanted to do was to prove to other people that i had a certain set of skills, let's say. flying an apache helicopter, for instance. rather than just being prince harry. >> reporter: today prince harry is a passionate advocate for the armed forces, especially for wounded veterans. >> we are invictus. >> reporter: through his annual invictus games. >> no one wants sympathy. all they want is an opportunity

to prove themselves. and that's what this is all about. >> can i get in the pool? >> yes, sir. come on. >> reporter: despite that sense of purpose, prince harry watched his older brother, william, marry kate middleton and start their family. the three were often together at polo matches and doing charity work. but something was missing. >> he was always the third wheel on royal engagements. it was the three of them. he didn't have anyone by his side. and that began to matter. >> i've longed for kids since i was very, very young. so i'm waiting to find the right person, somebody who's willing to take on the job. >> reporter: and the woman who is now taking on that role will never meet princess diana, prince harry has said mother would most certainly approve. >> they'd be thick as thieves, without questioning. she would be over the moon, jumping up and down, so excited for me.

but then probably best friends, best friends with meghan. >> she's with us. >> i'm sure she's with us, jumping up and down, somewhere else. >> what do you like about harry versus william? >> he's a people's person. >> reporter: at windsor castle the excitement is palpable. the life before the wedding it's turned into a party atmosphere in windsor. you can see fans lining up, settling in for the night. because tomorrow is the wedding of their favorite prince. with just hours to go, these fans hoping to catch a glimpse of history. are you going to be sleeping here tonight? >> yes. >> maybe not that much sleeping. >> reporter: for "nightline," i'm james longman in windsor castle. >> we'll have full coverage of the royal wedding beginning at 5:00 a.m. eastern right here on abc. when we come back, a final thought. ht i was managing my moderate to severe ulcerative colitis. but i realized something was missing... me. the thought of my symptoms returning was keeping me from being there for the people and things i love most. so, i talked to my doctor and learned

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